Sweet dreams are guaranteed with this constellation of glow-in-the-dark self-adhesive stars and planets. With 258 elements per pack, it's like sleeping under the stars. Great for all ages! You can apply them onto walls, ceilings, furniture, headboards, accessories... the sky is the limit! Please note that these Celestial Wall Stickers must be exposed to light before they will glow in the dark. This product is printed on opaque material for optimum color brightness. Suitable for any wall color. Wall decal measures 4 sheets of 10" x 18" .